Actual costs are always calculated by Microsoft Project

Specifies that Project calculates actual costs automatically, based upon resource rates, per-use resource costs, and fixed task costs.

If you enable this setting, Project will automatically calculate actual costs.

If you disable or do not configure this setting, the user's default setting is used.

Supported on: At least Windows 7
Registry HiveHKEY_CURRENT_USER
Registry Pathsoftware\policies\microsoft\office\15.0\ms project\options\calculation
Value Nameactual costs are always calculated by microsoft office project
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

proj15.admx

Administrative Templates (Computers)

Administrative Templates (Users)